We have all grumbled at some point about the price of beer at sporting events.

A small group of hockey fans in Idaho are so hopped up about the issue that they are suing a Boise, Idaho arena, saying they were duped into paying higher prices for beer.

Four fans filed the suit Tuesday in Boise's 4th District Court against Block 22 LLC, which does business as CenturyLink Arena. Brady Peck, Michele Bonds and William and Brittany Graham are seeking $10,000 in damages.

The lawsuit says CenturyLink Arena, home of the Idaho Steelheads hockey team, defrauded customers by charging $3 more for a tall, narrow cup advertised as a "large" that actually holds the same amount of beer as the shorter, wider cup described as a "small."

"While different shapes, both cup sizes hold substantially the same amount of liquid and are not large versus small in actual capacity," the group's attorney, Wyatt Johnson, wrote in the lawsuit. "Defendants knowingly sold each of their beers in a similar manner at each event held at the arena where beer was sold for at least the last five years."

The lawsuit comes on the heels of a YouTube video posted by Gwen Gibbs which demonstrated that the "large" beer held the same about as the "small" beer purchased at the arena.